Add dev doc  for Apollo open vehicle platform (#4767)
Add dev doc  for Apollo open vehicle platform (#4767)


ApolloAuto/apollo,jinghaomiao/apollo,xiaoxq/apollo,jinghaomiao/apollo,ApolloAuto/apollo,ycool/apollo,xiaoxq/apollo,wanglei828/apollo,ycool/apollo,xiaoxq/apollo,xiaoxq/apollo,ApolloAuto/apollo,xiaoxq/apollo,ycool/apollo,wanglei828/apollo,wanglei828/apollo,xiaoxq/apollo,ApolloAuto/apollo,ycool/apollo,wanglei828/apollo,ycool/apollo,jinghaomiao/apollo,ycool/apollo,jinghaomiao/apollo,wanglei828/apollo,jinghaomiao/apollo,ApolloAuto/apollo,ApolloAuto/apollo,jinghaomiao/apollo,wanglei828/apollo